Home / 15,115.21-20,852.52-9,440.11

Finding the Fourth Proportional to 15,115.21, 20,852.52 and 9,440.11

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Solution

The fourth proportional to 15,115.21, 20,852.52 and 9,440.11 is: 13,023.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,115.21 : 20,852.52 = 9,440.11 : x
  2. Step 2: Convert to fraction form
    15,115.21/20,852.52 = 9,440.11/x
  3. Step 3: Cross multiply
    15,115.21x = 20,852.52 × 9,440.11
  4. Step 4: Simplify right side
    15,115.21x = 196,849,931.11
  5. Step 5: Solve for x
    x = 196,849,931.11/15,115.21
  6. Step 6: Final answer
    x = 13,023.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.